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Study on influence of non-uniform permeability on filtration velocity distribution of filter bag surface
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Honggang YANG1, 2, 3, Ao LI2, 3, Yingxue CAO1, 2, 3, Xiaojing MENG1, 2, 3, Jinxiao WANG2, 3
China Safety Science Journal | 2025, 35(7) : 91 - 97
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China Safety Science Journal | 2025, 35(7): 91-97
• Safety engineering technology •
Study on influence of non-uniform permeability on filtration velocity distribution of filter bag surface
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Honggang YANG1, 2, 3, Ao LI2, 3, Yingxue CAO1, 2, 3, Xiaojing MENG1, 2, 3, Jinxiao WANG2, 3
Affiliations
  • 1State Key Laboratory of Green Building, Xi'an University of Architecture & Technology, Xi'an Shaanxi 710055, China
  • 2School of Resource Engineering, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China
  • 3Xi'an Key Laboratory of Occupational Hazard Assessment and Prevention Technology, Xi'an Shaanxi 710055, China
Published: 2025-07-28 doi: 10.16265/j.cnki.issn1003-3033.2025.07.1188
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In order to address the issue of uneven filtration velocity distribution on the filter bag surface in a baghouse dust collector, a new design method for filter bags with non-uniform permeability was proposed. Using Fluent software and User-Defined Function (UDF), the impact of non-uniform permeability on the filtration velocity distribution across the bag surface was simulated under the design filtration velocity condition (1.0 m/min). The results indicate that the filtration velocity of uniformly permeable filter bags gradually increases along the axis of the bag from bottom to top, and the uniformity of filtration velocity distribution decreases with the increase in bag length. By optimizing the permeability of filter bags with different lengths of 5, 7 and 10 m, the maximum filtration velocity on the surface of filter bags is reduced from 1.60, 2.32 and 3.34 m/min to 1.30, 1.31 and 1.38 m/min, respectively. Moreover, the uniformity index of filtration velocity distribution on the surface of the filter bag is significantly improved, from 0.736, 0.459, 0.210 to 0.854, 0.868, 0.892, respectively.

baghouse dust collector  /  filter bag surface  /  filtration velocity  /  non-uniform permeability  /  uniformity index
Honggang YANG, Ao LI, Yingxue CAO, Xiaojing MENG, Jinxiao WANG. Study on influence of non-uniform permeability on filtration velocity distribution of filter bag surface[J]. China Safety Science Journal, 2025 , 35 (7) : 91 -97 . DOI: 10.16265/j.cnki.issn1003-3033.2025.07.1188
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Year 2025 volume 35 Issue 7
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2025.07.1188
  • Receive Date：2025-02-10
  • Online Date：2026-07-09
  • Published：2025-07-28
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History
  • Received：2025-02-10
  • Revised：2025-04-20
Funding
Affiliations
    1State Key Laboratory of Green Building, Xi'an University of Architecture & Technology, Xi'an Shaanxi 710055, China
    2School of Resource Engineering, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China
    3Xi'an Key Laboratory of Occupational Hazard Assessment and Prevention Technology, Xi'an Shaanxi 710055, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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